Use realActivity name when comparing if intents are the same

The TaskRecord intent (usually the intent of the root activity) component
names are based on the realActivity (the activity we are actually launching
and not the input alias) and the ActivityRecord intent is based on the input
component name which can be an alias. This leads to issues when we are trying
to compare the intent of a task and an activity to see if they resolve to
the same thing since the component names will be different in the case of
aliasing.
We know base the activity intent component name on the realActivity before
comparing with the task record intent.

Bug: 27403679
Bug: 27112965
Change-Id: I196e03bb018582cbac977fb3ad45354f00f51578